JP5163040B2 - Seedling transplanter - Google Patents

Description

The present invention relates to a seedling transplanting machine for transplanting a vine seedling such as a sweet potato seedling, and belongs to the technical field of agricultural machinery.

Conventionally, as shown in Patent Document 1, two pivot holes are provided at positions at different distances from the pivot shaft in the latter half of the planting arm, and the pivot arm is provided at one end of the swing arm. Disclosure of technology that enables planting of sweet potato seedlings by selecting a planting method such as ship bottom planting or diagonal planting by pivotally attaching the shaft to one of the two pivot holes. Has been.
JP 2006-87369 A

  An object of the present invention is to allow a planting locus that is long in the front-rear direction by a seedling planted body to hold and plant vine seedlings such as sweet potato seedlings with a simple and compact mechanism, such as a vine seedling The object is to implement a seedling planting device that can be easily planted on the bottom of a ship.

In order to solve the above problems, the present invention has taken the following technical means.
That is, the present invention according to claim 1 is configured to support a seedling planted body that holds, transports, and plants a seedling transported by a seedling transporting portion at two connection points (Q1, Q2). The connection point (Q1) closer to the position is connected via a connection link (21) to the first drive body (20) that rotates around the non-moving axis (19) on the machine body side, and the seedling holding position The connecting point (Q2) on the far side is connected to the second driving body (23) that rotates around the non-moving axis (22) on the machine body side, and the movement of the connecting point (Q1) on the near side is provided. larger than the stroke of the stroke far side coupling point (Q2), first and second drive member (20), (23) is configured to rotated in opposite directions, seedling transport unit Includes a seedling container (40) for storing seedlings and a plurality of seedling containers (40). Left and right half cylinders formed in a trumpet shape so that the root side of the seedling is small and the leaf tip side is large in the seedling container (40). A seedling posture changing body (54) provided with a portion (54a, 54b) for guiding the vicinity of the tip of the leaf is provided, and a folded portion (55) is formed outside the left and right half tube portions (54a, 54b). The half cylinder portions (54a, 54b) are configured to rotate and open and close, and are configured to be biased toward the closing side by the spring (56), and the conveyor belt (41) is positioned on the outer periphery of the sprocket (42). and configured to maintain the closed state even in a state, seedling guide body that holds and guides the seedlings (58), provided to be opened and closed on a support shaft (59) around the rear side of the seedling posture changing body (54), seedlings Energize the guide body (58) to the opening side Tension spring (61) is provided, interlocked with the falling operation of seedling explant by acting on seedling guide body against the roller drops with seedling explants (60) tension spring (61) (58) The seedling guide body (58) is closed to hold the seedling, and the seedling planting body plantes the seedling in a state where the seedling is held, and the roller (60) rises together with the seedling planting body, and the tension spring (61) is the seedling guide. The seedling transplanter is configured to open the seedling guide body (58) in conjunction with the ascending operation of the seedling transplanting body by urging the body (58) to the opening side .

  In short, according to the present invention, a long planting trajectory in the front-rear direction of the seedling planting claw can be obtained by a simple and compact operating mechanism, and the seedling planting nail misses the seedling by the seedling guide body (58). There was no such thing, and it became easy to plant the bottom of a vine seedling.

Furthermore , since the left and right half tube portions (54a, 54b) are divided into left and right parts, seedlings can be easily inserted and removed, and the folded portion (55) is formed outside the left and right half tube portions (54a, 54b). As a result, the seedlings and fingers can easily slide in when the seedling is inserted, and the folded portion can be kept out of the way when the seedling is planted.

As one embodiment of the present invention, a seedling transplanting machine for transplanting a sweet potato seedling N, which is an example of a vine seedling, to a field will be described with reference to the drawings.
Such a seedling transplanting machine includes a seedling transport unit 3 for transporting sweet potato seedlings N to a body having a traveling unit 1 and a steering handle 2 for self-running the body, and a seedling N transported by the seedling transporting unit 3 in a field. It is a seedling transplanting machine provided with the seedling planting body 4 to be planted.

  In the illustrated example, the traveling unit 1 includes an engine E, a pair of left and right rear wheels 6 and 6 that are driven and rotated by transmission of the power of the engine E, and left and right wheels that are rotatably supported in front of the rear wheels 6 and 6. A pair of front wheels 7 and 7 is provided.

A mission case 8 is disposed at the rear of the engine E, and rotational power from the engine E is transmitted to a transmission mechanism in the mission case 8.
The left and right ends of the mission case 8 are respectively provided with left and right travel extension cases 10 and 10 that are rotatable with respect to the case 8, and the left and right travel extension cases 10 and 10 have respective ends. The transmission cases 9, 9 are fixedly provided on the part. Accordingly, the power in the mission case 8 input from the engine E is transmitted to the transmission cases 9 and 9. A pair of left and right rear wheels 6 and 6 are respectively attached to the axles 6a and 6a of the rotating front ends of the transmission cases 9 and 9, so that the airframe travels by driving the pair of left and right rear wheels 6 and 6. It has become.

  Arms 11, 11 project upwardly from the travel extension cases 10, 10, and these extend vertically to the piston rod end of the lifting hydraulic cylinder 12 fixed to the mission case 8. It is connected to the left and right ends of the balance rod 13 that is pivotably attached around the core. The right side of the connecting portion is connected by a rod 14, and the left side is connected by a left / right horizontal control hydraulic cylinder 15 which can be expanded and contracted.

  When the lifting / lowering hydraulic cylinder 12 is actuated and its piston rod protrudes rearward, the left and right arms 11 and 11 are rotated rearward, and accordingly the transmission cases 9 and 9 are rotated downward. Then the aircraft rises. On the other hand, when the piston rod of the lifting hydraulic cylinder 12 is retracted forward, the left and right arms 11 and 11 are rotated forward, and accordingly, the transmission cases 9 and 9 are rotated upward. Descends. The raising / lowering hydraulic cylinder 12 is configured to operate the airframe to a set height with respect to the height of the upper surface of the airframe based on the detection result of the sensor S that detects the height of the upper surface of the airframe. The interlocking structure is configured such that the body is raised or lowered by an artificial operation of an operation tool arranged in the vicinity of the steering handle 2.

  When the left / right horizontal control hydraulic cylinder 15 is extended and contracted, the balance rod 13 is rotated around the vertical axis connected to the tip of the piston rod of the lifting / lowering hydraulic cylinder 12, and the left and right transmission cases 9, 9 are rotated. Are alternately moved up and down to tilt the aircraft to the left and right. The left / right horizontal control hydraulic cylinder 15 is configured to be controllable so that the airframe is horizontally horizontal based on a detection result of a sensor that detects right / left inclination of the airframe relative to the left / right horizontal. The left and right front wheels 7 and 7 are installed so as to be freely rollable around the axial center in the front-rear direction at the left and right center position below the engine E.

  The steering handle 2 is attached to a rear end portion of a handle frame 2b having a front end portion fixed to the mission case 8. The handle frame 2b is disposed at a position deviated from the left and right center of the machine body to the right and extends rearward, and extends obliquely rearward and upward from the front and rear intermediate portion. The steering handle 2 extends rearward from the rear end portion of the handle frame 2b to the left and right, and each rear end portion serves as a grip portion 2a of the steering handle 2.

Next, the operation mechanism of the seedling planting body 4 shown in FIG. 3 will be described.
The seedling planting body 4 is connected to a drive unit that moves the seedling planting claw 5 up and down, and the seedling planting claw 5 of the seedling planting body 4 takes the seedling that has been transported by the seedling transporting unit 3. It is configured to hold and transport and plant seedlings in the field.

The drive unit that drives the seedling planting body 4 is provided in a planting transmission case 18 that includes a transmission mechanism that receives power for driving a seedling planting tool from the inside of the mission case 8.
The seedling planting body 4 is configured to be connected and supported at two connection points Q1 and Q2, and the connection point Q1 on the side close to the seedling holding position projects from the non-moving planting transmission case 18 on the machine body side. A connection point Q2 that is connected to a first drive body (crank arm) 20 that rotates around the first drive shaft 19 via a connection link 21 and that is farther from the seedling holding position is a planting transmission that does not move on the machine body side. A second drive body (eccentric wheel) 23 that is driven to rotate around the second drive shaft 22 from the case is provided, and the movement stroke of the near-side connection point Q1 is larger than the stroke of the far-side connection point Q2. The first and second driving bodies 20 and 23 are interlocked so as to drive and rotate in directions opposite to each other. Therefore, the seedling planting body 4 is configured such that when the first driving body 20 is driven to rotate clockwise and the second driving body 23 is driven to rotate counterclockwise, the seedling planting claw 5 at the tip thereof is connected via the connecting link 21. Thus, it operates by drawing a planting locus T that is long in the front-rear direction as shown in FIG.
Moreover, about the action | operation mechanism of the seedling planting body 4 shown in FIG. 1, FIG. 4, the example of a structure different from this example shown in FIG. 3 is shown, and it has the following structures. That is, the seedling planting body 4 is driven by being connected to a driving arm 26 that rotates as a driving unit. The drive arm 26 is fixed to a drive rotating shaft 27 that protrudes from the secondary planting transmission case 18 a provided continuously with the planting transmission case 18 and rotates. Then, the upper end portion of the support link 28 of the seedling planting body 4 is rotatably connected to the tip end portion of the drive arm 26, and the front end portion of the swing link 29 is rotatable to the lower end portion of the support link 28. It is linked to. The rear end portion of the swing link 29 is supported at the rear end portion of the support frame 30 that is supported by the secondary planting transmission case 18a so that the front portion thereof is rotatable around the drive rotary shaft 27 and extends rearward. The shaft 31 is rotatably supported. Therefore, when the drive arm 26 is driven to rotate, a link mechanism comprising the drive arm 26, a support link 28 connected to the tip end portion thereof, and a swing link 29 rotatably connected to the lower end portion thereof is provided. In operation, the seedling planting claw 5 at the front end (lower end) operates by drawing a trajectory T as shown in the figure.

  As shown in FIG. 4, by making the support frame 30 a folding type (the secondary planting transmission case 18a and the support frame 30 are refracted around the drive rotation shaft 27 core), planting the bottom of the ship (I), oblique It is configured so that the locus of planting (b) can be obtained. In addition, by further increasing the folding angle of the support frame 30, upright planting as shown in FIG. In addition, when the planting locus is changed as described in (a), (b), and (c) above, the suspension is suspended from the steering handle 2 so that the distance between the seedling planting claw 5 and the top surface of the ridge U is appropriate. The position is adjusted up and down by the adjustment lever 32. The support frame 30 is supported in a lifted state via a spring 33.

  By projecting the handle handle 34 from the support frame 30, the folding operation of the support frame 30 is facilitated. Further, the handle handle 34 is provided with a lock lever 35 so that the locking and unlocking when changing the planting locus can be easily performed by inserting and removing the lock pin.

  A pressure-reducing wheel 37 is provided at a rear position of the seedling planting portion, and a pair of left and right pressure-reducing wheels 37 is provided at a rear position of the seedling planting position, and rolls on the upper surface of the heel U as the aircraft advances, Lightly suppresses the marks after planting. The pressure-reducing wheel support frame 38 is pivotally attached to the support frame 30 so as to be movable up and down, and is configured so that the vertical angle can be adjusted via an adjustment plate 39 having several adjustment holes 39a.

  The seedling transport unit 3 is provided with a plurality of seedling storage units 40 for storing the sweet potato seedlings one by one in a posture in which the stem direction is along the front-rear direction, and rotates the seedling storage units in a row around a plurality of front-rear axes. It is configured to convey seedlings. In addition, in the embodiment, the seedling transport unit 3 includes the upper horizontal transport unit 3a that transports the seedling storage unit 40 in the left-right direction on the upper side of the machine body, and the seedling storage unit 40 that has been transported by the upper horizontal transport unit 3a. A descending transport unit 3b that transports downward, and an ascending transport unit 3c that transports the seedling container 40 transported by the descending transport unit 3b to the upper side of the machine body and returns it to the transport start end side of the upper lateral transport unit 3a. Yes. In the present embodiment, the seedling transport unit 3 is located on the rear side of the rear wheels 6 and 6, and the upper lateral transport unit 3a is provided so as to project to the left and right sides of the machine body. The working position where the seedling is supplied to the seedling container 40 while walking as the vehicle progresses is the side position of the machine body on the overhanging side of the upper lateral transport section 3a and the rear position of the upper lateral transport section 3a and the wheels 6. .

  A plurality of seedling storage units 40 are attached to the conveyor belt 41 side by side, and the conveyor belt 41 is provided with a pair of front and rear sprockets 42, 42; 43, 43 on the left and right on the upper side of the machine body, and front and rear on the left and right on the lower side of the machine body. It is wound around a pair of sprockets. The sprockets 42 and 42 on the upper side of the machine body are interlocked and connected to a conveyance drive shaft 44 driven from the planting transmission case 18 side.

  And it is the structure which the seedling conveyance part 3 drives so that the sprockets 42 and 42 of an upper right side may be driven and the seedling accommodating part 40 may move to a setting moving direction. The drive unit of the seedling transport unit 3 is linked to the seedling planting body 4 through an interlocking mechanism. When the seedling planting claws 5 of the seedling planting body 4 are lowered, the seedling container 40 is stopped and the seedlings are seeded. When the seedling planting claw 5 of the planted body 4 is raised, the seedling transport unit 3 is provided to be intermittently driven so that the seedling container 40 is moved.

  As described above, in the seedling transplanting machine, the machine body is self-propelled by the traveling unit 1, and the seedling transporting unit 3 that transports the seedling N has a plurality of seedling storage units 40 that circulate in a line around a plurality of longitudinal axes. In this seedling container 40, an operator takes a posture in which the vine seedlings are directed in the front-rear direction one by one, and the base side of the vine seedling or the middle part thereof is inserted between the seedling sandwiching portions and sandwiched Let In this way, the vine seedlings are accommodated in the seedling accommodating part 40 and are surely conveyed, and the seedling planting body 4 sandwiches the middle part of the seedlings and plants them in the field.

  In the embodiment shown in FIG. 5, belt drive rods 45a and 45b are arranged as shown in FIG. 5 as a drive system from the seedling planting transmission case 18 to the transport unit 3 so that the peripheral speed of the transport belt 41 is made constant. It is composed. Further, in the belt drive rods 45a and 45b, by shifting the arrangement angle as shown in FIG. 6, that is, the angle between the input side and the output side, the peripheral speed of the conveyor belt is changed, and the planting claws 5 hold the seedlings. The belt speed is slowed in the vicinity of this to ensure that the seedling can be pinched.

Next, the embodiment shown in FIG. 7 will be described.
By arranging the seedling transport unit 3 in the upper part of the hydraulic equipment such as the lifting hydraulic cylinder 12 and the horizontal control hydraulic cylinder 15, the length of the front and rear of the machine body can be shortened and the whole can be compactly arranged. The conveyance support frame 47 that supports the seedling conveyance unit is attached to the rear upper end of the mission case 8 to simplify the configuration. The seedling planting body 4 in this embodiment is configured to be moved up and down using planting links 46 and 46 parallel to the front and rear. The planting links 46, 46 are configured to interlock with the planting transmission case 18 and swing up and down. Further, the planting transmission case 18 is configured such that the angle can be adjusted by using the horizontal shaft 47 as a rotation fulcrum, and this rotation fulcrum has a position where the planting claw 5 holds the seedling (a nail top dead center position). By setting the height substantially the same, the angle can be easily changed from the bottom planting (I) to the diagonal planting (B).

  As shown in FIG. 8, in the pair of left and right seedling planting bodies 50, 50 that can swing open / close around the fulcrums P <b> 1, P <b> 2 by the operation of the opening / closing cam 53, Is provided with C-shaped cut surfaces 51a, 51a that are obliquely cut outward toward the lower end side, so that it is possible to pinch the seedling in any direction compared to the conventional one with the outside cut. Can be eliminated.

  The left and right seedling planting bodies 50, 50 at the time of seedling planting are in a state of closing and operating in a V shape as shown by the phantom lines in FIG. 8, and when returning from the soil, the left and right seedling planting bodies 50, 50 are left and right as shown by the solid lines in FIG. Is configured to prevent the soil and seedlings from being caught when ascending.

  The embodiment shown in FIG. 9 shows the structure of the seedling posture changing body 54 provided in the seedling container 40 of the seedling transporting section 3, and this seedling posture changing body 54 is formed in a cylindrical shape, It has a trumpet shape so that the root side is small and the leaf tip side is large, and the left and right split molds 54a and 54b are configured to allow easy insertion and extraction of seedlings. Further, the seedling posture changing body 54 is provided with a turn-back portion 55 so that the seedling and the finger can be easily slid when the seedling is inserted. In addition, this folding | returning part 55 is made the outer side of a pipe | tube so that a folding | turning part may not become obstructive at the time of seedling planting. Further, the posture changing body is configured such that the semi-cylinder portions 54a and 54b can be opened and closed around the pin shafts 57 and 57, and are automatically closed via the torque springs 56. Even if it covers the outer periphery of 42, it is configured to hold the closed state. Further, as shown in FIG. 10, the half-cylinder portions 54a and 54b of the posture changing body are configured to be short so that only the vicinity of the tip of the leaf is guided to reduce the members.

  Further, in the embodiment shown in FIG. 11, a pair of seedling guide bodies 58, 58 for guiding and holding the root side of the seedling is provided on the rear side of the seedling posture changing body 54 so as to be openable and closable around the support shaft 59. 58 and 58 are closed against the tension spring 61 by the roller 60 descending together with the seedling planting body 4, so that the holding of the seedling at the time of seedling planting is stabilized and the planting claw 5 Eliminate seedlings. When the seedling planting body is raised after planting, the roller 60 is also lifted and the seedling guide bodies 58 and 58 are automatically opened.

Side view of sweet potato seedling transplanter Same as above Side view of seedling transplanter showing the mechanism of seedling planting Side view of main parts of seedling transplanter Side view of main parts of seedling transplanter Side view of part of seedling transplanter Side view of seedling transplanter of another embodiment Front view of main parts of seedling planting device Perspective view of essential parts of seedling transport section Perspective view of seedling posture change body Perspective view showing relationship between seedling guide mechanism and seedling planted body

18 Planting transmission case 19 First drive shaft 20 First drive body 21 Connection link 22 Second drive shaft 23 Second drive body Q1 Connection point Q2 Connection point

Claims (1)

The seedling planted body that holds, transports, and plants the seedlings transported by the seedling transporting section is supported by two connection points (Q1, Q2), and the connection point (Q1) on the side close to the seedling holding position is The connection point (Q2) on the side far from the seedling holding position is connected to the first drive body (20) that rotates around the non-moving axis (19) on the machine body side via the connection link (21). It is connected to a second drive body (23) that is driven to rotate about an axis (22) that does not move on the machine body side, and the movement stroke of the near side connection point (Q1) is set to the far side connection point (Q2). The first and second driving bodies (20), (23) are configured to be driven and rotated in opposite directions to each other, and the seedling transport section includes a seedling storage section ( 40), a conveyor belt (41) that circulates a plurality of seedling containers (40), and a conveyor The seedling storage part (40) is provided with left and right half cylinders (54a, 54b) formed in a trumpet shape so that the root side of the seedling is small and the leaf tip side is large. A seedling posture changing body (54) that guides the vicinity of the tip of the leaf is provided, a folded portion (55) is formed outside the left and right half tube portions (54a, 54b), and the left and right half tube portions (54a, 54b) are formed. A structure that is rotated and opened and closed, a structure that is biased toward the closing side by a spring (56), and a structure that maintains the closed state even when the conveyor belt (41) is positioned on the outer periphery of the sprocket (42). The seedling guide body (58) for guiding and holding the seedling is provided on the rear side of the seedling posture changing body (54) so as to be openable and closable around the support shaft (59) , so that the seedling guide body (58) is opened. Provide a tension spring (61) to bias, By acting on the seedling guide body (58) in conjunction with the lowering operation of the seedling planting body closed seedling guide body (58) against the roller (60) the tension spring to drop with planting members (61) With the seedlings held, the seedling planting body planted the seedlings, and with the seedling planting body, the roller (60) rises and the tension spring (61) is attached to the side that opens the seedling guide body (58). The seedling transplanting machine configured to open the seedling guide body (58) in conjunction with the ascending operation of the seedling transplanting body .

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